/getfullbox <item> [meta] [sb-color]

• <item>: the item ID to fill the shulker box with (e.g., minecraft:diamond).
• [meta] (optional): metadata (damage value) for the item.
• [sb-color] (optional): color of the shulker box (e.g., red, blue, white). Defaults to purple if not specified.

This command gives the player a shulker box filled with 27 stacks of the specified item.

• The player must be in Creative mode.
• The item is inserted with the maximum stack size it allows.
• If the player’s inventory is full, the command will fail.

/getfullbox minecraft:stone

Gives a purple shulker box full of stone stacks.

/getfullbox minecraft:stone 5 blue

Gives a blue shulker box full of stone with metadata value 5 (Andesite).

• Only players can run this command.
• This command works only in Creative mode.
• The player must have permission level 2 or higher.